Backend Developer (m/f/d)

Ekkiden ist eine in 2019 gegründete internationale Beratungsgruppe: sie vereint ein Ökosystem leidenschaftlicher und engagierter Beraterinnen und Berater, die Transformationsprojekte in den Bereichen Organisation, Operations und Technologie durchführen, insbesondere in IT/Digital, Industrie/F\&E sowie Nachhaltigkeit, für Großunternehmen und KMU in Frankreich, der Schweiz, Spanien und Deutschland. As a Java Backend Developer, you design, implement, and maintain scalable backend services and APIs based on Java and Spring Boot, contributing to the stability and further development of products. You work closely with frontend, DevOps, and product teams to ensure seamless integration within our overall system architecture. **Tasks** * Design, development, and maintenance of backend services and RESTful APIs using Java and Spring Boot. * Implementation of new features and enhancement of existing functionality in a modular or microservice‑oriented architecture. * Integration and modelling of relational databases (e.g. PostgreSQL, MySQL) and, ideally, NoSQL databases (e.g. MongoDB, Redis). * Ensuring code quality through code reviews, unit and integration tests (e.g. JUnit). * Performance optimisation, monitoring, and troubleshooting of existing backend services. * Collaboration with frontend engineers and Product Owners on API design and contract alignment **What we're looking for** * Several years of experience in backend development with at least one common programming language, e.g. Java (e.g. with Spring/Spring Boot), or Node.js/TypeScript * Solid experience in designing and implementing RESTful APIs. * Hands‑on experience with relational databases (e.g. PostgreSQL, MySQL, SQL Server). * Basic understanding of CI/CD pipelines and container technologies (e.g. Docker, optionally Kubernetes). * Experience with test automation (unit tests, integration tests) and test frameworks relevant to your tech stack. * Team‑oriented mindset, willingness to participate in